John Armstrong
John Armstrong is the name of the following people:
- John Armstrong (General) (1674–1742), British military engineer
- John Armstrong (poet) (1709–1779), Scottish physician and poet
- John Armstrong Sr. (1717–1795), American civil engineer, general and politician
- John Armstrong (border settler) (1755–1816), American officer, lawyer and politician
- John Armstrong junior (1758–1843), American officer and politician
- John Armstrong (Bishop, 1813) (1813-1856), Anglican Bishop of Grahamstown
- John Armstrong (Bishop, 1905) (1905-1992), Anglican Bishop of Bermuda
- John Armstrong (director) (1928-2004), British director
- John Armstrong (author) (born 1956), Canadian author
- John Armstrong (ice hockey player) (born 1988), Canadian ice hockey player
- John Alexander Macdonald Armstrong (1877–1926), Canadian politician
- John Barclay Armstrong (1850-1913), American policeman
- John Eric Armstrong , American serial killer
- John Gordon Armstrong (* 1935), New Zealand politician
- John Ignatius Armstrong (1908–1977), Australian politician
